Blackening kev kho mob yog ib qho kev oxidation nto thiab tiv thaiv - txheej txheem corrosion rau cov ntaub ntawv hlau. Raws li cov txheej txheem kub thiab kev kho mob, nws feem ntau muab faib ua peb hom: qis- kub blackening, siab- kub blackening, thiab optical matte blackening. Txhua tus txheej txheem sib txawv hauv kev ua haujlwm txheej, qhov pom ntawm qhov chaw thiab cov xwm txheej siv tau.
I. Kev Taw Qhia Txog Peb Qhov Tseem Ceeb Blackening Processes
1. Tsawg-kub Blackening txheej txheem
Cov txheej txheem qis -kub blackening muab cov khoom lag luam ruaj khov. Cov yeeb yaj kiab oxide tsim yog ntom, ruaj thiab zoo -adhered. Tom qab cov roj sealing, qhov saum npoo nthuav tawm cov xim dub txawm tias sib sib zog nqus hnav, ua raws li lub teb chaws tus qauv GB / T15519. Featuring tus nqi siab ua tau zoo, cov txheej txheem no yog dav siv rau cov pa fastener anti- kho corrosion. Txawm li cas los xij, nws qhov kev tiv thaiv corrosion thiab hnav tsis kam yog qhov tsis zoo rau cov txheej txheem kub ntawm - kub blackening.
2. Siab -kub Blackening txheej txheem
High -kub blackening muab qhov kev ua tau zoo tshaj plaws nrog cov txiaj ntsig kho tau zoo. Cov oxide zaj duab xis tsim nta ultra- muaj zog adhesion thiab tsis sib xws. Cov ntsia liaj qhov rooj kho mob muaj ntau yam khoom xws li hnav tsis kam, kev sib txhuam txo, khawb tsis kam, qaug dab peg tsis kam, tiv thaiv corrosion thiab tus kheej - lubrication. Nws yog qhov tsim nyog rau kev tiv thaiv - kev kho corrosion ntawm siab - lub zog, siab -precision thiabhnyav -load hexagonal bolts, ua raws li cov txheej txheem blackening nyiam rau siab -kawg fasteners.
3. Optical Matte Blackening txheej txheem
Kev siv cov tshuaj tsim tshwj xeeb thiab cov txheej txheem tshwj xeeb, cov txheej txheem kho qhov muag matte blackening ua rau tsis yog -reflective matte dub oxide zaj duab xis rau ntawm qhov chaw ntsia liaj qhov rooj. Cov txheej txheem boasts muaj zog adhesion, ruaj khov qauv, tsis muaj tshauv residue thiab tsis muaj particle defects, nrog zoo hnav tsis kam. Nws yog muaj feem xyuam rau precision hexagonal bolts nrog tshwj xeeb yuav tsum tau rau cov tsos zoo nkauj thiab matte pom nyhuv.
II. Kev Tiv Thaiv Kev Ua Haujlwm rauHexagonal BoltKev Kho Mob Dub
1. Ua kom tiav tag nrho Degreasing hauv Pre- kev kho mob
Ib txwm -kub blackening tov yog acidic thiab tsis muaj peev xwm degreasing. Txhua yam kab mob ntawm cov roj saum npoo yuav tsum tau muab tshem tawm tag nrho nyob rau hauv ua ntej - kev kho mob theem. Txoj kev tsim nyog degreasing tuaj yeem raug xaiv raws li cov khoom siv tiag tiag. Tom qab degreasing, workpieces yuav tsum tau muab yaug nrog dej huv. Floating roj stains nyob rau hauv lub tank rinsing yuav tsum tau muab tshem tawm nyob rau hauv lub sij hawm kom tsis txhob muaj lwm yam kab mob. Cov txheej txheem tsim nyog rau degreasing yog cov yeeb yaj kiab tsis tu ncua thiab cov dej tsis tu ncua npog tag nrho cov khoom ua haujlwm. Water droplet aggregation los yog cov yeeb yaj kiab dej tsis tu ncua qhia tias degreasing tsis tiav. Rework yog yuav tsum tau, thiab oily workpieces yog txwv tsis pub nkag mus rau hauv lub blackening tank.
2. Precisely Control Film-ua Sijhawm rau cov khoom sib txawv
Cov ntaub ntawv hlau ntawm cov qib sib txawv muaj cov yeeb yaj kiab sib txawv - ua kom nrawm. Cov neeg ua haujlwm yuav tsum tsis tu ncua saib cov yeeb yaj kiab kev loj hlob thaum lub sijhawm tsim khoom thiab tshem tawm cov khoom ua haujlwm tam sim tom qab lub teeb grey -dub oxide zaj duab xis raug tsim. Cov workpieces yuav tsum tau muab tso rau hauv huab cua li 1 mus rau 2 feeb ua ntej lub cev qhuav dej ntawm cov roj immersion txheej txheem. Tom qab soaked nyob rau hauv anti- xeb lub cev qhuav dej roj, lub blackness, adhesion thiab compactness ntawm cov oxide zaj duab xis yuav ua tau zoo dua, ua kom ruaj khov khoom zoo thaum tswj cov nqi tsim khoom.
3. Ua kev soj ntsuam zoo ntawm zaj duab xis thaum lub sij hawm sawv ntsug
Kev tshuaj xyuas qhov tsis zoo yuav tsum tau ua thaum lub workpieces blackened sawv hauv huab cua tom qab ib txwm muaj - kub blackening. Cov khoom uas muaj cov qauv mottled, nthuav tawm substrate los yog rubsing -tawm txheej txheej dub yog txwv tsis pub nkag mus rau cov txheej txheem tom ntej, tshwj xeeb tshaj yog cov roj immersion. Cov txheej txheem teeb meem yuav tsum tau tshawb xyuas thiab kho tam sim ntawd txhawm rau tiv thaiv cov khoom puas los ntawm kev ntws mus rau cov txheej txheem tsim khoom tom ntej.
4. Kev Txiav Txim Txheej Txheem Peeling Defects thiab Siv Lub Hom Phiaj Rectification
Txheej txheej txheej feem ntau tshwm sim los ntawm ob qho laj thawj thiab tuaj yeem txiav txim los ntawm cov xwm txheej saum npoo. Yog tias tsuas yog txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej tsuas yog tshem tawm tsis tau nthuav tawm cov hlau substrate, qhov tsis xws luag yog tshwm sim los ntawm kev siv sijhawm ntau dhau ntawm cov txheej txheem blackening. Yog tias cov txheej txheem ntog tawm thiab nthuav tawm cov hlau substrate, pre- kev kho mob suav nrog degreasing thiab derusting tsis tiav, thiab tag nrho ua ntej - kho thiab re- blackening yuav tsum tau.
5. Stabilize Solution Concentration kom paub meej ua ntej-kev kho mob zoo
Cov concentrations ntawm degreaser thiab hydrochloric acid ua hauj lwm tov yuav tsum tau saib xyuas thiab tswj xyuas tsis tu ncua thaum lub sij hawm tsim khoom, tshwj xeeb tshaj yog cov concentration ntawm hydrochloric acid. Cov kev daws teeb meem ruaj khov yog qhov tseem ceeb lav rau kev tsim nyog ua ntej -kev kho mob, cov yeeb yaj kiab blackening thiab txhim khu kev qha txheej adhesion.
